The usual and doesn’t show signs of stopping.

Thegreenhouse gases (GHGs) that are the most influential towards our planet’sclimate are carbon dioxide, methane, nitrous oxide, and fluorinated gases. Eachof these have to come from their sources which may be natural or anthropogenic,as well as where they end afterwards which being their sinks.

Unfortunatelyever since the Industrial Revolution the anthropogenic sources have beenincreasing the amounts of the GHGs produced but it has been the natural sinks,especially the atmosphere which are recorded to have very high amounts morethan usual and doesn’t show signs of stopping. C3.1:Carbon DioxideCO2 is a GHG that has been seeing a very high spike in atmosphericquantities as seen in this figure. According to NASA, for the past 400,000years the atmospheric CO2 level has never risen above 300 CO2 parts permillion until 1950. Thereare three anthropogenic factors that account for this sudden change accordingto many scientists. 87% of all anthropogenic CO2 has come from, the emissionsof the burning of fossil fuels. These fossil fuels are mainly coal, gas, oiland peat. Deforestation accounts for 9% and cement manufacturing among otherindustrial processes that have been around since the beginning of theIndustrial Revolution account for the other 4% of human caused carbon dioxide.

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Theburning of fossil fuels and deforestation will be discussed under anthropogenicfactors affecting climate change in the second section. Large amounts of cementmanufacturing has been a result of increase in demand and therefore supply andproduction. However with residential companies becoming cheaper with theirbuilds for people’s houses have begun to use wood rather than cement adding tothe deforestation of our planet. Another point is that deforestation isn’tpurely anthropogenic as it is a natural process, also caused by forest firesthat are part of ecosystems.

            Natural sourcesthat produce carbon dioxide include the exchange of CO2 between the ocean andthe atmosphere. The ocean being a carbon sink releases CO2 at the surface fromthe dissolved CO2 already stored and this goes into the atmosphere.Approximately the other 57% of natural CO2 sources come from the respirationfrom animals and plants which is a by product of when energy is produced. Wealso do this, as we breathe in oxygen and release carbon dioxide to as bodilyfunction which gives us life. Microorganismsbreaking down dead or decaying material, release carbon dioxide into the atmosphereas by product as well.              There are two main carbon dioxidesinks which are both natural, land-based sink which basically are the plantsthat contain CO2 through photosynthesis and oceanic sink that include the photosynthesisby phytoplankton.  It alsoincludes the reactions that form carbonate for many marine organisms.

Inconclusion, the graph on the right shows the imbalance that fossil fuel burningis creating and this excess carbon dioxide then is left to the atmosphere.

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